Python 3.3 Released
Python 3.3 Released
Written by Alex Armstrong   
Saturday, 29 September 2012

After a few release candidates, Python 3.3 is ready to be used for real. The biggest change is the new yield from expression, there are also some new library modules and a range of small improvements.

Python is slowly working it's way away from the 2.x series and version 3.3 is another good reason to forget the past.





The new yield from expression is something that not all Python programmers will need to use. In fact, not many will need to master the yield from expression at all.

Yield is something you need to implement your own iterators, i.e. to generate a series of entities. Yield from allows you delegate the iteration to another iterator without loss of full control.

The four new library modules are:

  • faulthandler - for help with debugging low-level crashes
  • ipaddress -  a set of high-level objects representing IP addresses and masks
  • lzma  - compresses data using the XZ / LZMA algorithm)
  • venv - introduces virtual environments to Python

The Python virtual environments library essentially lets you set up a system in isolation from other versions of the language. You can also tailor the runtime environment to use particular versions of each library. If you have an application that you want to continue to work, even if the user installs new versions of libararies, then this is something you need to look into.



Unicode support has been improved in 3.3 with more efficient string storage and a full range of Unicode codepoints. This hopefully means that Python now allows proper Unicode apps to be written.

Many more minor improvements are listed on and you can download Python 3.3 for Linux, Windows and OSX there.

More Information

Related Articles

See Python Run - Free Visualization Tool

The Python Dictionary

Arrays in Python

blog comments powered by Disqus


To be informed about new articles on I Programmer, install the I Programmer Toolbar, subscribe to the RSS feed, follow us on, Twitter, Facebook, Google+ or Linkedin,  or sign up for our weekly newsletter.



Facebook's Redex Makes Android More Efficient

Or does it? Facebook developers have just described a project that aims to optimize Java byte code. The post is impressive. but it gives the impression that it is breaking new ground - it isn't.

Udacity Nanodegree Partnership For India

Udacity is launching local operations in India in partnership with Google and Tata Trusts, offering 1,000 full Android Nanodegree scholarships and a job fair for graduates and potential employers.

More News

More Information


Related Articles



Last Updated ( Saturday, 29 September 2012 )

RSS feed of news items only
I Programmer News
Copyright © 2015 All Rights Reserved.
Joomla! is Free Software released under the GNU/GPL License.